Properties

Label 1986.g
Number of curves $2$
Conductor $1986$
CM no
Rank $0$
Graph

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Show commands: SageMath
E = EllipticCurve("g1")
 
E.isogeny_class()
 

Elliptic curves in class 1986.g

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
1986.g1 1986g2 \([1, 0, 0, -24595, -1594291]\) \(-1645376523488898481/143035049183436\) \(-143035049183436\) \([]\) \(7600\) \(1.4604\)  
1986.g2 1986g1 \([1, 0, 0, 65, 6809]\) \(30342134159/20014304256\) \(-20014304256\) \([5]\) \(1520\) \(0.65569\) \(\Gamma_0(N)\)-optimal

Rank

sage: E.rank()
 

The elliptic curves in class 1986.g have rank \(0\).

Complex multiplication

The elliptic curves in class 1986.g do not have complex multiplication.

Modular form 1986.2.a.g

sage: E.q_eigenform(10)
 
\(q + q^{2} + q^{3} + q^{4} + q^{5} + q^{6} - 2 q^{7} + q^{8} + q^{9} + q^{10} + 2 q^{11} + q^{12} + 4 q^{13} - 2 q^{14} + q^{15} + q^{16} + 3 q^{17} + q^{18} + 5 q^{19} + O(q^{20})\) Copy content Toggle raw display

Isogeny matrix

sage: E.isogeny_class().matrix()
 

The \(i,j\) entry is the smallest degree of a cyclic isogeny between the \(i\)-th and \(j\)-th curve in the isogeny class, in the LMFDB numbering.

\(\left(\begin{array}{rr} 1 & 5 \\ 5 & 1 \end{array}\right)\)

Isogeny graph

sage: E.isogeny_graph().plot(edge_labels=True)
 

The vertices are labelled with LMFDB labels.